How to Open Two Yahoo Messengers in Windows 7

1. Close Yahoo! Messenger by right-clicking on its icon in your system tray at the bottom-right corner of the desktop, and choosing 'Exit.'
2. Click the 'Start' button. Place your cursor into the search box, type in 'regedit,' and press 'Enter' to launch the registry editor.
3. Double click on 'HKEY_CURRENT_USER,' followed by 'Software,' 'yahoo' and 'pager.'
4. Locate the 'Test' folder under the 'pager' heading. Right-click on the folder, move your mouse over 'New' and select 'DWORD.'
5. Click on the new entry that appears on the right side of the registry editor window. Type in 'plural' as the name for the entry.
6. Right-click on the word 'plural,' and choose 'Modify.' Enter '1' into the 'Value data' box. Click 'OK,' and close the registry editor. Now you can open a second Yahoo! Messenger window by simply running the program again.